EP0714178B1 - Système de diversité multi-antennes à balayage des signaux pour véhicules - Google Patents

Système de diversité multi-antennes à balayage des signaux pour véhicules Download PDF

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Publication number
EP0714178B1
EP0714178B1 EP95117376A EP95117376A EP0714178B1 EP 0714178 B1 EP0714178 B1 EP 0714178B1 EP 95117376 A EP95117376 A EP 95117376A EP 95117376 A EP95117376 A EP 95117376A EP 0714178 B1 EP0714178 B1 EP 0714178B1
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EP
European Patent Office
Prior art keywords
frequency
signal
signals
signal band
receiver
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95117376A
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German (de)
English (en)
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EP0714178A1 (fr
Inventor
Heinz Lindenmeier
Jochen Hopf
Leopold Reiter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuba Automotive GmbH and Co KG
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Fuba Automotive GmbH and Co KG
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Application filed by Fuba Automotive GmbH and Co KG filed Critical Fuba Automotive GmbH and Co KG
Publication of EP0714178A1 publication Critical patent/EP0714178A1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0805—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching
    • H04B7/0814—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching based on current reception conditions, e.g. switching to different antenna when signal level is below threshold
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0831—Compensation of the diversity switching process for non-uniform properties or faulty operations of the switches used in the diversity switching process

Definitions

  • the invention is based on a multi-antenna scanning diversity reception system to eliminate reception disorders after DE 3517247 for reception in the meter wave range, e.g. at FM.
  • An example of such a system according to the prior art, how it is currently used on a large scale is in Fig.1 shown.
  • this diversity facility there is a multitude of antennas connected to a diversity processor, on its There is an antenna switch at the input, which is detected of reception disturbances of the switched through to the receiver Signal is switched to the next position.
  • On Detector for detecting interference in the received signal is in the Diversity processor housed.
  • the latter arrangement either the leading signal or the IF signal carrying line for another Connection between diversity processor and receiver used to suppress the antenna switch of the diversity processor occurring when switching Switching noises may be audible in the receiver by means of a mute function.
  • the Decoupling between these mute signals and the existing RF on the affected line. IF signals are generated by a signal switch in the diversity processor and reached in the receiver.
  • Task of a receiving antenna diversity system is therefore for the transfer of high-frequency received signals and the intermediate-frequency signals between the diversity processor 1 and the receiver 4 to get by with only one high-frequency line.
  • the invention offers the advantage of compatibility of Cable preparation necessary for the installation of the antenna system of the vehicle. For example - regardless of the planned Equipping the vehicle with an active FM single antenna on the rear window pane or an FM antenna diversity system on this window pane - the vehicle with only one High-frequency line can be prepared. By exchanging the Receiver and the attached in the area of the rear window electronic components for the active antennas or Diversity processor can the vehicle without much assembly effort - starting from the system with a single antenna - into a multi-antenna scanning diversity reception system be converted.
  • the antenna switch 15 which selects the received high-frequency signal 14 from the offered antenna signals A 1 to A N according to its current position, is followed by a first signal switch 2 which is permeable to the high-frequency received signals 14 flowing in the direction of the receiver and which Signals at the output of the diversity processor 1 of the high-frequency line 6 supplies.
  • a second signal switch 19 with an input connection 22 at the high-frequency input of the receiver 4, which contains a permeable first signal path 20 for the high-frequency input signals 14 flowing at the end of the line 6 and towards the receiver.
  • the advanced receiver circuit 11 is connected to the output 23 of the signal switch 19.
  • the intermediate frequency signals 16 are coupled out of the IF part of the receiver and fed to a further connection, the IF connection 24 of the signal switch 19.
  • this signal switch has a second signal path 21, which is permeable to intermediate frequency signals 16 fed in at connection 24 and flowing to connection 22 of second signal switch 19.
  • the first signal switch 2 has in the output of the diversity processor 1 another connector, the IF connector 8, a there is a second signal path 21 which is used for the input 7 Intermediate frequencies entering and exiting at output 8 Signals 16 is permeable.
  • These signals are sent to the detector 10 to detect malfunctions, which if present a fault switches the antenna switch 15 on. in this connection it is necessary that the first and second signal paths of the Signal switches 2 and 19 are each designed such that neither high-frequency receive signals in the paths for intermediate frequencies Signals arrive and vice versa, so that neither in the diversity processor 1 still in the receiver 4 through the double use of the line 6 interference occurs for the different signals.
  • the signal switches 2 and 19 can either be directionally selective or frequency selective or in a combination of Frequency selectivity and directional selectivity can be designed.
  • Fig. 3 is the signal switch located at the diversity processor 2 exemplarily from a combination of a band pass for the intermediate frequency signal 16 in the second signal path 21 and a bandstop for the intermediate frequency signal 16 and pass in the first signal path 20 for the high-frequency signal 14 designed.
  • the entire filter arrangement is designed such that it Signals in the frequency range of long and medium waves are not blocked. With the help of an inductance 25 selected for this purpose, additional information can be transmitted to the receiver via the connection 7 to the high-frequency line 6.
  • the additional information can be supplied to the receiver by different DC voltage levels at connection 8.
  • the condition here is that, in the event of digital changes to this level at terminal 8 in the transient process, there are no spectral components in the frequency range of the intermediate-frequency and high-frequency signals which could interfere with operation.
  • Such additional information can e.g. consist in that on Port 8 during the switching of the antenna switch 15 a pulse is fed, which via line 6 to the receiver 4 is fed and e.g. in the low frequency part of the receiver during the switching process on the antenna switch 15 a Muting causes so that the switching process is none can cause audible interference.

Claims (7)

  1. Système de diversité multi-antennes à balayage de signaux avec un processeur de diversité (1) qui reçoit à son entrée les signaux de réception à haute fréquence (A1 à AN) de plusieurs antennes et qui contient un commutateur d'antenne (15), un premier séparateur de signaux (2) et un détecteur (10) destiné à reconnaítre les perturbations des signaux de réception, avec en outre un deuxième séparateur de signaux (19) et des récepteurs (4) présentant une partie à fréquence intermédiaire et disposés loin du processeur de diversité (1), avec en outre une ligne à haute fréquence (6) reliant la sortie du processeur de diversité (1) avec un point de connexion (22) du récepteur (4), le signal d'antenne (14) sélectionné par le commutateur d'antenne (15) étant acheminé sur un premier trajet de signal (20) en passant par le premier séparateur de signaux (2), la ligne à haute fréquence (6) et le deuxième séparateur de signaux (19) jusqu'à la partie à fréquence intermédiaire du récepteur (4), et un signal de fréquence intermédiaire (16) tiré de la partie de fréquence intermédiaire du récepteur (4) étant acheminé sur un deuxième trajet de signal (21) du récepteur (4) au détecteur (10) contenu dans le processeur de diversité (1), un signal de commutation (3) étant produit par le détecteur (10) si les conditions de réception sont mauvaises et transmis au commutateur d'antenne (15) pour le faire commuter sur un autre signal d'antenne, caractérisé en ce que le deuxième trajet de signal (21) dans le récepteur (4) est amené à une connexion (24) du deuxième séparateur de signaux (19) destinée aux signaux de fréquence intermédiaire (16) puis, par la connexion du deuxième séparateur de signaux (19) reliée à la ligne à haute fréquence (6) et en passant par la ligne à haute fréquence (6), à la connexion (7) du premier séparateur de signaux (2) reliée à celle-ci dans le processeur de diversité (1), et enfin, par la connexion (8) du premier séparateur de signaux (2) destiné aux signaux de fréquence intermédiaire (16), jusqu'au détecteur (10), en ce que des mesures de sélection dans le premier séparateur de signaux (2) et le deuxième séparateur de signaux (19) assurent que le premier trajet de signal (20) est barré aux signaux à fréquence intermédiaire (16) et le deuxième trajet de signal (21) aux signaux HF (14) reçus.
  2. Système de diversité multi-antennes à balayage de signaux selon la revendication 1, caractérisé en ce que l'un au moins des deux séparateurs de signaux est conçu de manière sélective en fonction de la fréquence et le premier trajet de signal (20) laisse passer les signaux de réception à haute fréquence (14) grâce à des filtres de fréquence et arrête les signaux de fréquence intermédiaire (16) et le deuxième trajet de signal (21) laisse passer le signaux de fréquence intermédiaire (16) grâce à des filtres de fréquence et arrête les signaux de réception à haute fréquence (14).
  3. Système de diversité multi-antennes à balayage de signaux selon les revendications 1 et 2, caractérisé en ce que les deux séparateurs de signaux ne contiennent que des filtres bloquant les fréquences intermédiaires (13) et laissant passer les fréquences intermédiaires (12).
  4. Système de diversité multi-antennes à balayage de signaux selon la revendication 1, caractérisé en ce que l'un au moins des séparateurs de signaux est conçu de manière sélective en fonction de la direction grâce à des coupleurs directionnels (26) et le premier trajet de signal (20) laisse passer uniquement les signaux allant en direction du récepteur et, de ce fait, uniquement les signaux de réception à haute fréquence (14) et arrête les signaux de fréquence intermédiaire (16) allant en direction du processeur de diversité, et le deuxième trajet de signal (21) ne laisse passer que les signaux allant vers le processeur de diversité et par conséquent à fréquence intermédiaire (16) et arrête les signaux de réception à haute fréquence (14) allant vers le récepteur.
  5. Système de diversité multi-antennes à balayage de signaux selon les revendications 2 à 4, caractérisé en ce que l'un au moins des séparateurs de signaux est conçu de manière sélective en fonction de la direction grâce à des coupleurs directionnels (26) et également conçu de manière sélective en fonction de la fréquence afin de renforcer ses capacités de sélection.
  6. Système de diversité multi-antennes à balayage de signaux selon la revendication 2, caractérisé en ce que le deuxième trajet de signal (21) des séparateurs de signaux contient un élément de couplage laissant passer les basses fréquences en vue de la transmission d'informations complémentaires entre la connexion à fréquence intermédiaire (8) du premier séparateur de signaux (2) et la ligne électrique (6) menant à la connexion à fréquence intermédiaire (24) du deuxième séparateur de signaux (19).
  7. Système de diversité multi-antennes à balayage de signaux selon la revendication 6, caractérisé en ce que l'élément de couplage est réalisé sous la forme d'une inductance (25) de valeur ohmique élevée dans la plage de fréquences GO/MO/PO.
EP95117376A 1994-11-23 1995-11-04 Système de diversité multi-antennes à balayage des signaux pour véhicules Expired - Lifetime EP0714178B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4441761A DE4441761A1 (de) 1994-11-23 1994-11-23 Mehrantennen-Scanning-Diversitysystem für Fahrzeuge
DE4441761 1994-11-23

Publications (2)

Publication Number Publication Date
EP0714178A1 EP0714178A1 (fr) 1996-05-29
EP0714178B1 true EP0714178B1 (fr) 2002-09-04

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EP95117376A Expired - Lifetime EP0714178B1 (fr) 1994-11-23 1995-11-04 Système de diversité multi-antennes à balayage des signaux pour véhicules

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US (1) US5826179A (fr)
EP (1) EP0714178B1 (fr)
DE (2) DE4441761A1 (fr)
ES (1) ES2180605T3 (fr)

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US6009335A (en) * 1997-09-26 1999-12-28 Rockwell Science Center, Inc. Method of calibrating and testing spatial nulling antenna
DE19823237A1 (de) * 1998-05-25 1999-12-02 Heinz Lindenmeier Funksystem für Fernwirkfunktionen in stehenden Fahrzeugen
GB9812429D0 (en) * 1998-06-09 1998-08-05 Radiant Networks Plc Transmitter,receiver and transceiver apparatus
DE19847887A1 (de) * 1998-10-18 2000-04-20 Heinz Lindenmeier Scanning-Antennen-Diversity-System für Fahrzeuge
US6201472B1 (en) * 1998-10-26 2001-03-13 Pittway Corp. Wireless communication system with increased dynamic range
DE19858465A1 (de) * 1998-12-17 2000-06-21 Heinz Lindenmeier Scanning-Diversity-Antennensystem für Fahrzeuge
AU2379700A (en) * 1999-02-05 2000-08-25 Interdigital Technology Corporation Communication station with automatic cable loss compensation
US7123939B1 (en) * 1999-02-05 2006-10-17 Interdigital Technology Corporation Communication station with automatic cable loss compensation
DE19910571A1 (de) * 1999-03-10 2000-09-14 Delphi Tech Inc Rundfunkempfangsvorrichtung
DE19953728B4 (de) * 1999-11-08 2007-03-08 Harman Becker Automotive Systems Gmbh Verfahren zur Auswahl einer von mehreren Antennen in einer Antennendiversity-Empfangsanlage sowie Antennendiversity-Empfangsanlage
DE19953731A1 (de) * 1999-11-08 2001-06-13 Becker Gmbh Verfahren zur Auswahl einer von mehreren Antennen einer Antennendiversity-Empfangsanlage sowie Antennendiversity-Empfangsanlage
US6594508B1 (en) * 2000-03-31 2003-07-15 Nokia Corporation Antenna and cable monitoring for radio base station
KR20020005160A (ko) * 2000-07-08 2002-01-17 Didim Power Co Ltd 스포츠 센터용 오디오/비디오 시스템
EP1182800B1 (fr) * 2000-08-24 2009-04-15 Continental Automotive GmbH Système de réception à diversité d'antenne
US6813483B1 (en) * 2002-02-27 2004-11-02 Lsi Logic Corporation Method and system for improving noise margin in a receiver circuit
JP4103666B2 (ja) * 2003-04-03 2008-06-18 株式会社村田製作所 無線受信装置
DE102006039357B4 (de) * 2005-09-12 2018-06-28 Heinz Lindenmeier Antennendiversityanlage zum Funkempfang für Fahrzeuge
KR100983547B1 (ko) * 2005-11-21 2010-09-24 후지쓰 텐 가부시키가이샤 수신 장치
DE102007017478A1 (de) * 2007-04-13 2008-10-16 Lindenmeier, Heinz, Prof. Dr. Ing. Empfangsanlage mit einer Schaltungsanordnung zur Unterdrückung von Umschaltstörungen bei Antennendiversity
EP2037593A3 (fr) * 2007-07-10 2016-10-12 Delphi Delco Electronics Europe GmbH Installation de diversité d'antennes pour la réception radio à bande relativement large dans des véhicules
DE102007039914A1 (de) * 2007-08-01 2009-02-05 Lindenmeier, Heinz, Prof. Dr. Ing. Antennendiversityanlage mit zwei Antennen für den Funkempfang in Fahrzeugen
DE102008003532A1 (de) * 2007-09-06 2009-03-12 Lindenmeier, Heinz, Prof. Dr. Ing. Antenne für den Satellitenempfang
US8107915B2 (en) * 2008-04-28 2012-01-31 Delphi Technologies, Inc. Receiver system and method for receiving signals
PT2209221T (pt) * 2009-01-19 2018-12-27 Fuba Automotive Electronics Gmbh Sistema de recepção para a soma de sinais de antena em fase
DE102009011542A1 (de) * 2009-03-03 2010-09-09 Heinz Prof. Dr.-Ing. Lindenmeier Antenne für den Empfang zirkular in einer Drehrichtung der Polarisation ausgestrahlter Satellitenfunksignale
DE102009023514A1 (de) * 2009-05-30 2010-12-02 Heinz Prof. Dr.-Ing. Lindenmeier Antenne für zirkulare Polarisation mit einer leitenden Grundfläche
CN113746492A (zh) * 2021-09-10 2021-12-03 北京微纳星空科技有限公司 一种应用于卫星电磁环境监测的射频接收通道设备

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Also Published As

Publication number Publication date
DE4441761A1 (de) 1996-05-30
ES2180605T3 (es) 2003-02-16
US5826179A (en) 1998-10-20
DE59510361D1 (de) 2002-10-10
EP0714178A1 (fr) 1996-05-29

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